Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 520 [Rate centres in NPA 520] [Dial plan for NPA 520]

NXX: 689

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-689 A Superior AZ SPRRAZMARS1  9636 QWEST CORPORATION 666      
520-689 0 Superior AZ   9636 QWEST CORPORATION 666      
520-689 1 Superior AZ   9636 QWEST CORPORATION 666      
520-689 2 Superior AZ   9636 QWEST CORPORATION 666      
520-689 3 Superior AZ   9636 QWEST CORPORATION 666      
520-689 4 Superior AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2004-07-17   
520-689 5 Superior AZ   9636 QWEST CORPORATION 666      
520-689 6 Superior AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2015-05-10   
520-689 7 Superior AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2014-10-11   
520-689 8 Superior AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2006-04-02   
520-689 9 Superior AZ   9636 QWEST CORPORATION 666      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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